mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
David Vacca
2d8fe89784
Summary: This diff flattens the hierarchy of Text C++ files. This is required to integrate Text into RN OSS changelog: [internal] internal Reviewed By: JoshuaGross Differential Revision: D23173556 fbshipit-source-id: ce90000cae147460aa4ddad55b7c90369fa734a2
108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <folly/Optional.h>
|
|
#include <react/renderer/components/text/ParagraphEventEmitter.h>
|
|
#include <react/renderer/components/text/ParagraphProps.h>
|
|
#include <react/renderer/components/text/ParagraphState.h>
|
|
#include <react/renderer/components/text/TextShadowNode.h>
|
|
#include <react/renderer/components/view/ConcreteViewShadowNode.h>
|
|
#include <react/renderer/core/ConcreteShadowNode.h>
|
|
#include <react/renderer/core/LayoutContext.h>
|
|
#include <react/renderer/core/ShadowNode.h>
|
|
#include <react/renderer/textlayoutmanager/TextLayoutManager.h>
|
|
|
|
namespace facebook {
|
|
namespace react {
|
|
|
|
extern char const ParagraphComponentName[];
|
|
|
|
/*
|
|
* `ShadowNode` for <Paragraph> component, represents <View>-like component
|
|
* containing and displaying text. Text content is represented as nested <Text>
|
|
* and <RawText> components.
|
|
*/
|
|
class ParagraphShadowNode : public ConcreteViewShadowNode<
|
|
ParagraphComponentName,
|
|
ParagraphProps,
|
|
ParagraphEventEmitter,
|
|
ParagraphState>,
|
|
public BaseTextShadowNode {
|
|
public:
|
|
using ConcreteViewShadowNode::ConcreteViewShadowNode;
|
|
|
|
static ShadowNodeTraits BaseTraits() {
|
|
auto traits = ConcreteViewShadowNode::BaseTraits();
|
|
traits.set(ShadowNodeTraits::Trait::LeafYogaNode);
|
|
traits.set(ShadowNodeTraits::Trait::TextKind);
|
|
|
|
#ifdef ANDROID
|
|
// Unsetting `FormsStackingContext` trait is essential on Android where we
|
|
// can't mount views inside `TextView`.
|
|
traits.unset(ShadowNodeTraits::Trait::FormsStackingContext);
|
|
#endif
|
|
|
|
return traits;
|
|
}
|
|
|
|
/*
|
|
* Associates a shared TextLayoutManager with the node.
|
|
* `ParagraphShadowNode` uses the manager to measure text content
|
|
* and construct `ParagraphState` objects.
|
|
*/
|
|
void setTextLayoutManager(SharedTextLayoutManager textLayoutManager);
|
|
|
|
#pragma mark - LayoutableShadowNode
|
|
|
|
void layout(LayoutContext layoutContext) override;
|
|
Size measureContent(
|
|
LayoutContext const &layoutContext,
|
|
LayoutConstraints const &layoutConstraints) const override;
|
|
|
|
/*
|
|
* Internal representation of the nested content of the node in a format
|
|
* suitable for future processing.
|
|
*/
|
|
class Content final {
|
|
public:
|
|
AttributedString attributedString;
|
|
ParagraphAttributes paragraphAttributes;
|
|
Attachments attachments;
|
|
};
|
|
|
|
private:
|
|
/*
|
|
* Builds (if needed) and returns a reference to a `Content` object.
|
|
*/
|
|
Content const &getContent(LayoutContext const &layoutContext) const;
|
|
|
|
/*
|
|
* Builds and returns a `Content` object with given `layoutConstraints`.
|
|
*/
|
|
Content getContentWithMeasuredAttachments(
|
|
LayoutContext const &layoutContext,
|
|
LayoutConstraints const &layoutConstraints) const;
|
|
|
|
/*
|
|
* Creates a `State` object (with `AttributedText` and
|
|
* `TextLayoutManager`) if needed.
|
|
*/
|
|
void updateStateIfNeeded(Content const &content);
|
|
|
|
SharedTextLayoutManager textLayoutManager_;
|
|
|
|
/*
|
|
* Cached content of the subtree started from the node.
|
|
*/
|
|
mutable better::optional<Content> content_{};
|
|
};
|
|
|
|
} // namespace react
|
|
} // namespace facebook
|